US Bridges

Chambers Rock RD over White Clay Creek

GoodPosted for load

New Castle County, Delaware · White Clay Creek Preserve · Structure no. 1216 329

Built
1928
97 years old, rebuilt 1995
Condition
Good
inspected March 2023
Type
Truss - Thru
Steel
Length
69 ft
1 main span
Daily traffic
3,582
2022 count
Owner
State
State Highway Agency

About this bridge

Chambers Rock RD over White Clay Creek is a steel truss - thru carrying Chambers Rock RD over White Clay Creek in New Castle County, Delaware. It was built in 1928 and reconstructed in 1995, so it is 97 years old, older than the Delaware average of 47.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 3,582 vehicles a day, roughly 17% of them trucks, projected to reach 5,036 by 2042. The structure is 69 ft (21 m) long and 16 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesChambers Rock RD
CrossesWhite Clay Creek
LocationWhite Clay Creek Preserve
RouteCounty Highway 329
CountyNew Castle County
StateDelaware
Coordinates39.73281, -75.75986
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating26.8 US tons
Inventory rating20.7 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckWood or timber
Main spans1
Design loadHS 20
Structure length69 ft (21 m)
Longest span67 ft (20.4 m)
Deck width16 ft (5 m)
Roadway width16 ft (5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,582 (2022)
Projected traffic5,036 by 2042
Trucks17%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$171,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Chambers Rock RD over White Clay Creek built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 1995.

What condition is Chambers Rock RD over White Clay Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in March 2023.

How much traffic does Chambers Rock RD over White Clay Creek carry?

About 3,582 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is Chambers Rock RD over White Clay Creek?

The structure is 69 ft (21 m) long with a longest span of 67 ft (20.4 m) and a deck 16 ft wide.

Who owns Chambers Rock RD over White Clay Creek?

It is owned by the State Highway Agency.